Solder flux composition

Details Solder flux composition Solder flux composition

1981-01-23

1982-11-23

Rosenberg, P. D.

Metal treatment

Compositions

Fluxing

148 24, 148 25, B23K 3534

Patent

active

043603920

ABSTRACT:
A solder flux composition comprises a mixture of sarcosine and tartronic or tartaric acid dissolved in water and an aliphatic alcohol. Typically the acid-sarcosine weight ratio lies within the range 90:10 to 30:70 and the solution may contain between 5 and 20 weight percent of solids. The flux is employed for tin/lead soldering of a range of metals and alloys including copper, nickel and nickel-iron. Bidegradation of the flux is inhibited by the inclusion of lead carbonate, phenol or salicylic acid in the composition.

REFERENCES:
patent: 3467556 (1969-09-01), Stayner
patent: 3575738 (1971-04-01), Becker
patent: 3617345 (1969-11-01), Brown
patent: 3748191 (1973-07-01), Strauss

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